Research Article Search Results
Assembled Bead Cultured Half-Pearl
Investigation in the Carlsbad laboratory reveals a pearl submission is not mabe as initially believed.
Dendritic Patterns in Emerald
Rose-Shaped Cloud Inclusion in Diamond
CVD Laboratory-Grown Gem Diamonds from Plasmability
CVD-Grown Diamond with an Unusual Blue Band
Checkered Pattern on Diamond
The 3309 cm–1 Series in Sapphire and Ruby: A Focus on FTIR Peak Position Variation
Investigates the correlations between peak positions in the 3309 cm–1 series with trace element concentrations for ruby, metamorphic and basalt-related blue sapphire, and laboratory-grown sapphire.
Emeralds in Catherine de’ Medici’s Pendant: An Unexpected Geographic Origin
Archival research and gemological characterization reveal the geographic origin of two emeralds set in a pendant linked to Catherine de’ Medici, Queen of France from 1547 to 1559.
Applications of X-Ray Radiography and X-Ray Computed Microtomography in Gemology
X-ray imaging techniques revolutionized pearl testing by enabling gemologists to distinguish natural from cultured pearls through detailed visualization of their internal structures, evolving from film-based systems in the early 1900s to today’s sophisticated digital equipment.
Rare Musgravite Crystal in Green Sapphire
“Out of the Darkness” …and Into the Light of Diamond Fluorescence
